Looking down into the 4951, all boards removed (except mother).
Tape drive. Unfortunately, the drive wheel turned to black goo, so the tape I have is unreadable.
Bottom board -- memory.
Bottom board goes in upside-down and is seucred by headers.
On top of that, the video & peripheral board (printer/computer). Green wire is NTSC composite to back BNC.
Top board controller for tape drive.
Side view of stack.
Totally awesome keyboard with control character shortcuts.
Sidecar for interfacing with serial cables. Also a lid. Really neat LCD for showing status of lines, as well as header pins and dip switch for patching and rerouting.